Flotation machine technical operation and maintenance procedures

Technical operating procedures

Main technical data of equipment:

1. Model specification: XJK－1.1

2. Effective volume: 1.1m3

3. Speed of impeller: 330 revolutions/min, diameter 500 mm

4. Production capacity: 0.6-1.6m3/min

5. Motor model: JO251-6

6. Power: 5.5

7. Number of revolutions: 970 revolutions per minute

(1) Operating conditions:

1. All bolts and keys are fastened without looseness, and the impeller back-tightening nut is reliable.

2. The large triangle belt wheel and impeller must undergo a balance test, and the vertical shaft part can rotate flexibly and stably.

3. All parts are well lubricated, each bearing gland has no leakage, and the lubricating oil cup should be placed in an easy-to-operate place.

4. There must be no blockage and slurry leakage in the ore circulation pipe. The tank has no leakage.

5. The liquid level adjustment mechanism is flexible and reliable.

6. There should be a gap of 6-10mm between the upper part of the impeller and the lower part of the stator.

7. Complete electrical facilities, sensitive and reliable.

8. The exposed rotating part should be equipped with a firm and reliable protective cover.

(2) Inspection before driving, driving sequence and precautions:

1. The following parts must be checked before driving:

(1) Tank body part: check whether there is leakage, whether rags, wood chips, etc. fall into the bottom of the tank.

(2) Body part: Whether the screws of each part are fastened, whether the mineral liquid pipe is worn or leaked, check the gap and wear of the impeller and the stator.

(3) Transmission part: Check whether the belt pulley is damaged, whether the key is tight, whether the belt tightness is moderate, the handwheel is rotated 2-3 times, and the rotation is flexible.

(4) Other parts: check whether the scraper and the scraper shaft are intact, check whether the electrical facilities are intact, and whether the safety shield is firm.

(5) Lubrication part: check the oil level of the reducer, the lubrication of the scraper bearing, and the oil supply of each oiler cup.

2. The inspection work is in charge of the operation staff, and the problems should be dealt with in a timely manner. Major problems should be reported to the relevant leaders before processing, and recorded in the operation records in detail.

(1) It can be started only after checking it is correct and contacting the upper and lower procedures.

(2) The driving sequence is: push on the knife switch and press the start button.

(3) It is strictly forbidden to leave the post or hand over the equipment to others at work.

(4) After driving, it is strictly forbidden to touch the rotating part with hands and move the protective cover casually.

(5) It is strictly forbidden to operate electrical switches with wet hands.

(3) Maintenance and key inspection contents during operation:

1. Inspection and maintenance during operation.

Check parts

Check the contents

Body parts

1. Whether each screw is loose

2. Whether the vertical axis part vibrates or has abnormal sound

3. Observe the agitation of the liquid surface to judge the wear of the impeller

Bearings and lubrication points

1. The fuel supply of each fueling point

2. Lubrication of the scraper shaft bearing

3. The temperature of the upper and lower bearings of the vertical shaft shall not exceed 70℃

Motor part

1. The temperature rise of the motor shall not exceed 60℃

2. Whether there is vibration and abnormal smell

Scraper part

Is the operation of the scraper part normal?

2. The inspection situation should be recorded in the operation record at any time.

(4) Operation sequence and precautions for parking:

1. When stopping the operation, stop the ball mill after stopping for 20 minutes.

2. When parking, press the stop button first, and then pull down the switch.

3. When there is no notice of power outage or accident, the stop button should be pressed immediately, and the knife switch should be pulled down. If the parking time is long, the slurry in the tank should be discharged to prevent the slurry from depositing, pressing the impeller and affecting starting.

4. When the motor fails, the power should be cut off immediately, and the electrician should be notified for maintenance. Do not deal with it by yourself, and it is strictly forbidden to work with electricity.

(5) Possible failures, causes and elimination methods:

Failure phenomenon

cause of issue

Elimination method

Vertical shaft bearing

High temperature or

Noise

1. Lack of oil or poor oil quality

2. Severe wear or breakage

3. Improper installation

4. The belt is too tight

1. Add oil or change oil

2. Replace

3. Adjust

4. Adjust

Body vibration or swing

1. Impeller or V-belt wheel is unbalanced

2. Spindle bending or unqualified processing

3. Improper installation of impeller and stator

4. The vertical shaft bearing is worn or broken

5. The impeller or V-belt is loose or the fastening bolts are loose

6. The air cylinder falls

1. Adjust or replace

2. Correction or replacement

3. Parking correction

4. Replace or adjust

5. Change keys or tighten

6. Stop and lift it tightly

Difficulty starting

1. The impeller is buried by ore

2. Broken bearing

1. Rinse open

2. Replace

Scraper and tank

Overflow friction

1. The scraper shaft is bent

2. The bearing clearance is too large

3. Loose clips or bolts

1. Replace

2. Replace the bearing bush

3. Fasten or replace

No signs of stirring

The impeller falls off or is severely worn

Repair or replace

2. Maintenance procedures

(1) Regular inspection and maintenance:

Serial number

Check dimension

Protect part

Check maintenance content

Maintenance standards

Period

Be responsible for

Type of work

1

Vertical axis and

Transmission part

1. Check or replace the bearing

2. Check or replace the impeller and stator

3. Check the belt and pulley

1. The gap is properly sealed and well sealed

3. intact

6 months

30～45 days

1 year

Operator

Or fitter

Operator

Or fitter

Fitter

2

Tank part

1. Overhaul the pipeline

2. Tank and its accessories

1. No clogging and leakage

2. intact

1 year

1 year

Fitter

Fitter

3

Electrical part

1. Check or replace motor bearings

2. Electrical wiring and facilities

1. Meet the requirements

2. No leakage, sensitive and reliable

1 year

1 year

Electric fitter

Electrician

(2) Regular lubrication:

Serial number

Lubrication Department

lubricating

the way

Type and nature of lubricating oil

Period

Be responsible for

Type of work

Come on

Oil change

1

Vertical shaft upper and lower bearings

Oil ring

Calcium base grease dropping point T=90℃

Every class

6 months

Operator

2

Scraper reducer

oil bath

45#Machine oil

э50=5.24～7.07

6 months

Operator

3

Bearings of scraper

Artificial

Calcium base grease

Dropping point T=90℃

Every class

3 months

Operator

4

Motor bearing

Artificial

Calcium base grease

Dropping point T=120℃

6 months

Electric fitter

(3) Regular cleaning:

Serial number

Cleaning department

Cleaning requirements

cycle

Responsible type of work

1

Vertical shaft bearing body

Clean and dust-free

Every class

Operator

2

Tank part

Clean and dust-free

Every class

Operator

3

Motor housing

Clean and dust-free

Every class

Operator

4

surroundings

Clean

Every class

Operator

5

Electrical facilities

No dust, good contact

30～45 days

Electrician

6

Other parts such as pulleys, etc.

Clean up after parking, dust-free and oil-free

Operator